Auth: SSO settings foundations (#77724)

* inital changes, db migration

* changes

* Implement basic GetAll, Delete

* Add first batch of tests

* Add more tests

* Add service tests for GetForProvider, List

* Update http_server.go + wire.go

* Lint + update fixed role

* Update CODEOWNERS

* Change API init

* Change roles, rename

* Review with @kalleep

* Revert a mistakenly changed part

* Updates based on @dmihai 's feedback

---------

Co-authored-by: Karl Persson <kalle.persson@grafana.com>

pkg/server/wire.go

@@ -130,6 +130,8 @@ import (
 	"github.com/grafana/grafana/pkg/services/signingkeys"
 	"github.com/grafana/grafana/pkg/services/signingkeys/signingkeysimpl"
 	"github.com/grafana/grafana/pkg/services/sqlstore"
+	"github.com/grafana/grafana/pkg/services/ssosettings"
+	ssoSettingsImpl "github.com/grafana/grafana/pkg/services/ssosettings/ssosettingsimpl"
 	starApi "github.com/grafana/grafana/pkg/services/star/api"
 	"github.com/grafana/grafana/pkg/services/star/starimpl"
 	"github.com/grafana/grafana/pkg/services/stats/statsimpl"
@@ -377,6 +379,8 @@ var wireBasicSet = wire.NewSet(
 	loggermw.Provide,
 	signingkeysimpl.ProvideEmbeddedSigningKeysService,
 	wire.Bind(new(signingkeys.Service), new(*signingkeysimpl.Service)),
+	ssoSettingsImpl.ProvideService,
+	wire.Bind(new(ssosettings.Service), new(*ssoSettingsImpl.SSOSettingsService)),
 	idimpl.ProvideService,
 	wire.Bind(new(auth.IDService), new(*idimpl.Service)),
 	grafanaapiserver.WireSet,